Vote up?

I’m wondering how many digits after the dot you really need. 1.667 rounds up to either 1.67 or even 1.7. At 12 pixels (which is, as I understand it, the way CSS interprets the em of a 12 px font) the errors amount to 0.04 and 0.4 pixels respectively, which in and of themselves can’t really exist. My LCD has no half-pixels.

Wouldn’t it be OK to just round up and be done with the whole fractions business? Surely, if there is any kind of rounding difference between engines, rounding ourselves eliminates errors.